<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>表格</title>
    <style>
        td {
            width: 20px;
            height: 20px;
        }
    </style>
</head>

<body>
<table border="1" style="border-collapse: collapse">
    <tr>
        <td colspan="12">1</td>
        <td rowspan="12">2</td>
    </tr>
    <tr>
        <td rowspan="12">4</td>
        <td colspan="10">5</td>
        <td rowspan="10">6</td>
    </tr>
    <tr>
        <td rowspan="10">8</td>
        <td colspan="8">9</td>
        <td rowspan=8">10</td>
    </tr>
    <tr>
        <td rowspan="8">12</td>
        <td colspan="6">13</td>
        <td rowspan="6">14</td>
    </tr>
    <tr>
        <td rowspan="6">16</td>
        <td colspan="4">17</td>
        <td rowspan="4">18</td>
    </tr>
    <tr>
        <td rowspan="4">20</td>
        <td colspan="2">21</td>
        <td rowspan="2">22</td>
    </tr>
    <tr>
        <td rowspan="2">24</td>
        <td>25</td>
    </tr>
    <tr>
        <td colspan="2">23</td>
    </tr>
    <tr>
        <td colspan="4">19</td>
    </tr>
    <tr>
        <td colspan="6">15</td>
    </tr>

    <tr>
        <td colspan="8">11</td>
    </tr>
    <tr>
        <td colspan="10">7</td>
    </tr>
    <tr>
        <td colspan="12">3</td>
    </tr>
</table>
</body>
</html>
